Chaeles potter



(No Model.) ,A

G. POTTER, Jr.

MEANS EOE FOLDING PAPER WEBS.

No. 374,699. Patented Dec. 13, 1887.

uw im NV PETERS Phalxrlilbogmpher. Waxhngtun. D. C,

l UNrrEn4 STATES PATENT Ormea CHARLES POTTER, JR., OF PLAINFIELD, NEW JERSEY.

MEANS FOR FOLDING PAPER WEBS.

SPECIFICATION forming part of Letters Patent No. 4374,699, dated December 13, 1887.

Application tiled March 24, 1884.

To @ZZ whom it may con/cern.-

Be it known that I, CHARLEs POTTER, Jr., of Plaineld, in the county of Union and State of New Jersey, have invented an Improvement in Means for Folding Paper Webs, of which the following is a specification.

Printing-presses are often made in which a web of paper from a roll is drawn in and printed upon both sides and then out and delivered to folding mechanism.

My improvement relates to improved meansfor folding the paper longitudinally as it passes from the printing or cutting cylinders.

' In the drawings, Figure 1 is a sectional elevation with one of the vertical cylinders removed; Fig. 2', a plan of the rollers and folding-plates; and Fig. 3 is a cross-section at the line x x, Fig. l, showing the direction in which the paper is folded.

The rollers a b represent the last pair of cylinders in a web-printing press. Usually such cylinders will be provided with cuttersto partially separate the sheets; but such separation may be effected after the longitudinal folds have been made. The rollers a b stand horizontally. The pair of rollers c d stand vertically.

e is a plateplaced vertically and in line with the center of the printed sheet as delivered by the rollers c b. The upper edge of this plate eis inclined and made comparatively sharp, so as to lift the middle part of the sheet bodily and crease or fold the same. This plate is suitably supported near the rollers a b,.and near the rollers c d the said plate is adjustable vertically, preferably by the screw g. This vertical adjustment allows for setting the ma chine so as to accommodate the apparatus to sheets of different widths.

The rollers c d are sufficiently long to act with any sheet that can pass between the rollers a b, and the frame h, in which they are supported, is placed so that the said rollers will be at the proper height iurelation to the rollers a b.

The center part ofthe sheet forming the first fold is to be carried by the edge of the plate e up higher than the top end of the rollerse eZ, so that the crease of the paper does not come between such rollers c d, and from the upper edge of the plate e there is a continuation in the form of a guidenger, e', which is within Serial No. 125,276. (No model.)

the center fold of the paper and continues at a forward and downward inclination, and is turned or twisted so as to terminate horizontally, or nearly so, near the pair of rollers k Z, the axes of which lie horizontal.

Between the rollers c d and la Z there is a horizontal plate, m, the edge of which is at an inclination to the axis of theapparatus, and it 6o is comparatively sharp. This plate is placed so as to be opposite the middle of the double` folded sheet as it passes through between the rollers c d. This plate m carries the middle of the two thicknesses of paper off in such a manner that the sheet receives its second fold and the rollers lc Z are able to grasp the four thicknesses of paper and move it along with a uniform speed and compress the folds, so that the paper is in a condition to be folded across 7o transversely by any desired mechanism. The cutting-cylinders are preferably made to scparate the paper after it is folded, for which purpose such cylinders will be applied at p q'. If the paper is partially cut by the cylinders 7 5 a b, then the cylindersp q will pull the folded sheet so as to separate it from the web;or the cylindersp q may cut the paper off, and from the said cylinders p q the paper is to be taken to any desired folding apparatus to be folded 8o across transversely and delivered as usual.

The respective cylinders and rollers are to be applied in such a manner that the edges of the paper between the cylinders a b and c cZ are almost level; hence as the edges ofthe paper converge toward the rollers c Z and the middle of the sheet is lifted by the plate e the edges of the sheet will hang loosely, and the portion of the plate e that is above the ends of the rollers c d being level, the sheet as it is 9o carried along by c d will not become folded or creased.

The pair of rollers 7c Z act upon the doublefolded sheet at right angles to its edge and move the same along with regularity and 9 5 uniformity, the plate m having carried the middle of the double or folded sheet in the direction indicated, so that the edges of the folded sheet are nearly at a vertical plane passing through the center of the press and be- Ico tween the rollers c d. f

The upper portion of the folded sheet, after it passes the rollers c-d,will drop toward the plate m, and I place an inclined plate, s, ora

rod,beneaththe lower` fold of paper to lift the 2. The rollesa b and c d, in combination with the plate e, the upper edge of which is continued as a finger across the ends of the x5 rollers c d, the rollers la l, and plate m7 and the lifting rod or plate s below the plate m, substantially as set forth.

Signed by me this 19th day of March, A. D.

CHARLES POTTER, JR. Witnesses:

GEO. T. PINCKNEY, WILLIAM G. Mofr'r. 

